Khloe Kardashian and Kendall Jenner sit in a luxe doctor’s office with white walls. Behind them, a window opens onto another room containing a futuristic blue brain scanner. The sisters are gazing at the doctor, an energetic middle-aged balding man wearing a white coat.
This is Dr. Daniel Amen, 68, a psychiatrist to stars who has also treated Justin Bieber, Bella Hadid, and Meghan Trainor. Amen offers “bespoke” mental health...